Electric safety-fuse or cut-out.



PATENTED MAY 3, 1904.

J. A. HBANY.

ELECTRIC SAFETY FUSE 0R GUT-OUT.

APPLIOA'IION FILED 001. 12, 1903.

N0 MODEL.

INGTON. n. cy

Patented May 3, 1904.

UNITED STATES PATENT OFFICE.

JOHN A. HEANY, OF YORK, PENNSYLVANIA, ASSIGNOR TO THE TETER- HEANY DEVELOPING COMPANY, OF CHARLESTON, WEST VIRGINIA, A

CORPORATION OF WEST VIRGINIA.

ELECTRIC SAFETY-FUSE OR CUT-OUT- SPEGIFIOA'IION forming part of Letters Patent No. 758,647, dated May 3, 1904.

Application filed October 12, 1903.

To all, whom it may concern:

Be it known that I, JOHN ALLEN HEANY, a citizen of the United States, residing at York, in the county of York and State of Pennsylvania, have invented certain new and useful Improvements in Electric Safety-Fuses or Out- Outs, of which the following is a specification.

My invention has relation to a safety-fuse or fusible cut-out of the type wherein the fusible material in the. form ofan easily-melte metallic wire is inclosed in a spool or casing of non-conductible and indestructible mate rial; and in such connection it relates to the construction and arrangement of parts constituting such a safety-fuse or cut-out.

The principal object of my invention is to provide a safety-fuse or cut-out of very simple construction wherein the parts are so assembled that upon the destruction of a fusewire the same may be readily and quickly replaced to renew thefuse.

In the carrying out of my invention there is provided a spool of dielectric and indestructible material having a bore extending eccen- 2 5 trically and longitudinally therethrough in which the fuse-wire is adapted to be received, and upon the spool, at each end thereof, is arranged a cap of metal adapted to turn upon the end of the spool, said caps each having a 0 perforation arranged to register with the bore in the spool to permit the entrance or removal of the'wire into or out of the spool, said caps being adapted when turned upon the spool to successively cut oif the fuse into a required 3 5 length, shave off the wire to required crosssection or ampere-carrying capacity, bind the Wire in the spool, and close the endsof the bore in the spool to inclose the wire within the spool.

The nature and scope of my invention will be more fully understood from the following description, taken in connection with the accompanying drawings, forming part hereof, in which Figure 1 is a side elevational view of a safety-fuse or cut-out embodying main features of my invention. Fig. 2 is a longitudinal sectional View of the same, illustrating the Serial No. 176,613. (No model.)

method of inserting the fuse-wire. Figs. 3, 4, v and 5 are end elevational views, Fig. 5 being partly in section, illustrating the different positions assumed by the caps during the assembling of the parts together. Figs. 6 and 7 are side elevational and top plan views on a smaller scale, illustrating the invention embodied in a fuse to be placed between two stationary terminals or contacts; and Fig. 8 is a perspective view, also on a smaller scale, illustrating a form of safety-fuse or cut-out embodying the invention, but adapted for insertion in spring contacts or clips.

Referring to Figs. 1 to 5 of the drawings, the fuse or cut-out of cartridge type comprises a spool (0, having a longitudinal bore 1), extending eccentrically from end to end for the reception of the fuse-wire d. On each end of the spool a is arranged to turn a metallic cap 6, having an opening 0, arranged to register with the bore bin the spool 60 in one position of the cap, Fig. 3, and when turned to pass said bore 6 to close the same, as illustrated in Fig. 5. On either end of the spool 60, adjacent to the bore 1), are arranged one ormore semicircular channels a for the reception and retention of an end of the fuse-wire cl, as illustrated in Fig. 5.

In the operation of assembling the fuse parts the caps e are both turned so that their openings e register with and form a continuation of the bore 6. A strip of wire 0Z is then inserted, as illustrated in Figs. 2 and 3. Upon turning each cap 6 the wire (Z is first shaved off and crowded down into the channel a to gage the ampere-carrying capacity of the wire and then out off by the edge of the opening 6, as illustrated in Fig. 4:. Upon further turning of the cap ethe unperforated portion of said cap binds the end of the wirebetween the spool and the inner metallic face of the cap 6. To remove the wire, both caps are turned to the position illustrated in Fig. 2 touncover the ends of the fuse-wire d and to permit of said wire being readily withdrawn from the spool 60.

In Figs. 6 and 7 the cartridge form of fuse or cut-out fits between two stationary contactpieces g and g. In Fig. 8 the caps are en larged in width, as at c so that the fuse may be slipped into spring contact arms or clips, (not shown,) with the broad periphery of the caps a resting in said spring contact arms or clips.

Having thus described the nature and object of my invention, whatI claim as new, and desire to secure by Letters Patent, is

1. 111 a safety fuse or cut-out, a spool of dielectric material having an eccentric, longitudinal bore for the reception of the fuse-wire, combined with metallic caps secured to the spool and free to turn thereon, each cap having an eecentrically-arrangcd perforation adapted as the cap is turned to register with the bore to open said bore and to close the bore and clamp the fuse-wire to the spool.

ing witnesses.

JOHN A. HEANY. Witnesses:

J. W'ALTER DOUGLASS, THoMAs M. SMITH. 

